./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 566e2cbe460cf96671c9cef5a53ce51910e23c462e96f394be80b957976729c5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 06:47:06,676 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 06:47:06,733 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-01-10 06:47:06,738 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 06:47:06,739 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 06:47:06,764 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 06:47:06,765 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 06:47:06,765 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 06:47:06,765 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 06:47:06,765 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 06:47:06,766 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 06:47:06,766 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 06:47:06,766 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 06:47:06,766 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 06:47:06,767 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 06:47:06,767 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 06:47:06,767 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 06:47:06,767 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 06:47:06,767 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 06:47:06,768 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 06:47:06,768 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 06:47:06,768 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 06:47:06,768 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 06:47:06,768 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 06:47:06,768 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 06:47:06,768 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 06:47:06,768 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 06:47:06,768 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 06:47:06,768 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 06:47:06,768 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 06:47:06,768 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 06:47:06,768 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:47:06,769 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:47:06,769 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:47:06,769 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:47:06,769 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 06:47:06,769 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:47:06,769 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:47:06,770 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:47:06,770 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:47:06,770 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 06:47:06,770 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 06:47:06,770 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 06:47:06,770 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 06:47:06,770 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 06:47:06,770 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 06:47:06,770 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 06:47:06,770 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 06:47:06,770 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 06:47:06,770 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 06:47:06,770 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 566e2cbe460cf96671c9cef5a53ce51910e23c462e96f394be80b957976729c5 [2025-01-10 06:47:07,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 06:47:07,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 06:47:07,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 06:47:07,024 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 06:47:07,024 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 06:47:07,025 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2025-01-10 06:47:08,249 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/53402440d/33f944aba7044afc9204bf0979f6d978/FLAG2bd3049b5 [2025-01-10 06:47:08,541 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 06:47:08,541 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2025-01-10 06:47:08,553 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/53402440d/33f944aba7044afc9204bf0979f6d978/FLAG2bd3049b5 [2025-01-10 06:47:08,829 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/53402440d/33f944aba7044afc9204bf0979f6d978 [2025-01-10 06:47:08,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 06:47:08,832 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 06:47:08,833 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 06:47:08,833 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 06:47:08,836 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 06:47:08,837 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:47:08" (1/1) ... [2025-01-10 06:47:08,837 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a8a28c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:47:08, skipping insertion in model container [2025-01-10 06:47:08,837 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:47:08" (1/1) ... [2025-01-10 06:47:08,858 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 06:47:09,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:47:09,207 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 06:47:09,262 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:47:09,297 INFO L204 MainTranslator]: Completed translation [2025-01-10 06:47:09,298 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:47:09 WrapperNode [2025-01-10 06:47:09,298 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 06:47:09,299 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 06:47:09,299 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 06:47:09,299 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 06:47:09,303 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:47:09" (1/1) ... [2025-01-10 06:47:09,318 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:47:09" (1/1) ... [2025-01-10 06:47:09,346 INFO L138 Inliner]: procedures = 272, calls = 110, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 342 [2025-01-10 06:47:09,346 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 06:47:09,347 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 06:47:09,347 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 06:47:09,347 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 06:47:09,354 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:47:09" (1/1) ... [2025-01-10 06:47:09,354 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:47:09" (1/1) ... [2025-01-10 06:47:09,362 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:47:09" (1/1) ... [2025-01-10 06:47:09,382 INFO L175 MemorySlicer]: Split 84 memory accesses to 4 slices as follows [2, 5, 2, 75]. 89 percent of accesses are in the largest equivalence class. The 67 initializations are split as follows [2, 5, 0, 60]. The 7 writes are split as follows [0, 0, 1, 6]. [2025-01-10 06:47:09,382 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:47:09" (1/1) ... [2025-01-10 06:47:09,382 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:47:09" (1/1) ... [2025-01-10 06:47:09,399 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:47:09" (1/1) ... [2025-01-10 06:47:09,400 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:47:09" (1/1) ... [2025-01-10 06:47:09,403 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:47:09" (1/1) ... [2025-01-10 06:47:09,404 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:47:09" (1/1) ... [2025-01-10 06:47:09,405 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:47:09" (1/1) ... [2025-01-10 06:47:09,409 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 06:47:09,411 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 06:47:09,411 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 06:47:09,411 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 06:47:09,412 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:47:09" (1/1) ... [2025-01-10 06:47:09,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:47:09,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:47:09,445 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-10 06:47:09,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-10 06:47:09,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-10 06:47:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-10 06:47:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-01-10 06:47:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-10 06:47:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-10 06:47:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-10 06:47:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-01-10 06:47:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-10 06:47:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-10 06:47:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-01-10 06:47:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-01-10 06:47:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-01-10 06:47:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 06:47:09,477 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-01-10 06:47:09,477 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-01-10 06:47:09,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 06:47:09,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-10 06:47:09,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-10 06:47:09,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-01-10 06:47:09,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 06:47:09,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 06:47:09,478 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-10 06:47:09,606 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 06:47:09,607 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 06:47:09,953 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 06:47:09,953 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 06:47:10,292 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 06:47:10,293 INFO L312 CfgBuilder]: Removed 15 assume(true) statements. [2025-01-10 06:47:10,293 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:47:10 BoogieIcfgContainer [2025-01-10 06:47:10,293 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 06:47:10,295 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 06:47:10,295 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 06:47:10,298 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 06:47:10,298 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:47:08" (1/3) ... [2025-01-10 06:47:10,300 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e997ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:47:10, skipping insertion in model container [2025-01-10 06:47:10,300 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:47:09" (2/3) ... [2025-01-10 06:47:10,301 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e997ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:47:10, skipping insertion in model container [2025-01-10 06:47:10,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:47:10" (3/3) ... [2025-01-10 06:47:10,302 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_72-funloop_hard_racing.i [2025-01-10 06:47:10,314 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 06:47:10,317 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_72-funloop_hard_racing.i that has 2 procedures, 129 locations, 1 initial locations, 20 loop locations, and 22 error locations. [2025-01-10 06:47:10,317 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 06:47:10,370 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-01-10 06:47:10,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 166 transitions, 339 flow [2025-01-10 06:47:10,497 INFO L124 PetriNetUnfolderBase]: 60/262 cut-off events. [2025-01-10 06:47:10,501 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-01-10 06:47:10,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 262 events. 60/262 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1286 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 151. Up to 8 conditions per place. [2025-01-10 06:47:10,507 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 166 transitions, 339 flow [2025-01-10 06:47:10,512 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 165 transitions, 337 flow [2025-01-10 06:47:10,520 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 06:47:10,535 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1e7e659d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 06:47:10,535 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2025-01-10 06:47:10,540 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 06:47:10,541 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-01-10 06:47:10,541 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 06:47:10,541 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:47:10,541 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-01-10 06:47:10,542 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-01-10 06:47:10,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:47:10,546 INFO L85 PathProgramCache]: Analyzing trace with hash 926155, now seen corresponding path program 1 times [2025-01-10 06:47:10,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:47:10,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661607562] [2025-01-10 06:47:10,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:47:10,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:47:10,622 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 06:47:10,654 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 06:47:10,655 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:47:10,655 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:47:10,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:47:10,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:47:10,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661607562] [2025-01-10 06:47:10,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661607562] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:47:10,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:47:10,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:47:10,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56889213] [2025-01-10 06:47:10,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:47:10,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:47:10,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:47:10,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:47:10,839 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:47:10,849 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 166 [2025-01-10 06:47:10,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 165 transitions, 337 flow. Second operand has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:47:10,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:47:10,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 166 [2025-01-10 06:47:10,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:47:11,317 INFO L124 PetriNetUnfolderBase]: 949/2959 cut-off events. [2025-01-10 06:47:11,318 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-01-10 06:47:11,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4773 conditions, 2959 events. 949/2959 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 24085 event pairs, 800 based on Foata normal form. 529/3099 useless extension candidates. Maximal degree in co-relation 4624. Up to 1807 conditions per place. [2025-01-10 06:47:11,341 INFO L140 encePairwiseOnDemand]: 130/166 looper letters, 69 selfloop transitions, 3 changer transitions 0/137 dead transitions. [2025-01-10 06:47:11,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 137 transitions, 425 flow [2025-01-10 06:47:11,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:47:11,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:47:11,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 365 transitions. [2025-01-10 06:47:11,353 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5496987951807228 [2025-01-10 06:47:11,354 INFO L175 Difference]: Start difference. First operand has 132 places, 165 transitions, 337 flow. Second operand 4 states and 365 transitions. [2025-01-10 06:47:11,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 137 transitions, 425 flow [2025-01-10 06:47:11,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 137 transitions, 425 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 06:47:11,366 INFO L231 Difference]: Finished difference. Result has 137 places, 137 transitions, 301 flow [2025-01-10 06:47:11,368 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=301, PETRI_PLACES=137, PETRI_TRANSITIONS=137} [2025-01-10 06:47:11,370 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 5 predicate places. [2025-01-10 06:47:11,371 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 137 transitions, 301 flow [2025-01-10 06:47:11,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.75) internal successors, (263), 4 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:47:11,371 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:47:11,371 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-01-10 06:47:11,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 06:47:11,372 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-01-10 06:47:11,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:47:11,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1822311694, now seen corresponding path program 1 times [2025-01-10 06:47:11,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:47:11,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894510489] [2025-01-10 06:47:11,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:47:11,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:47:11,391 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 06:47:11,412 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 06:47:11,413 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:47:11,413 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:47:11,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:47:11,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:47:11,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894510489] [2025-01-10 06:47:11,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894510489] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:47:11,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911309544] [2025-01-10 06:47:11,522 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:47:11,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:47:11,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:47:11,526 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:47:11,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-10 06:47:11,581 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 06:47:11,604 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 06:47:11,604 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:47:11,604 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:47:11,606 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:47:11,609 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:47:11,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:47:11,650 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:47:11,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911309544] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:47:11,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:47:11,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-01-10 06:47:11,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079493752] [2025-01-10 06:47:11,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:47:11,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:47:11,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:47:11,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:47:11,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-01-10 06:47:11,661 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 166 [2025-01-10 06:47:11,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 137 transitions, 301 flow. Second operand has 6 states, 6 states have (on average 65.83333333333333) internal successors, (395), 6 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:47:11,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:47:11,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 166 [2025-01-10 06:47:11,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:47:12,087 INFO L124 PetriNetUnfolderBase]: 949/2958 cut-off events. [2025-01-10 06:47:12,088 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-01-10 06:47:12,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4783 conditions, 2958 events. 949/2958 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 24097 event pairs, 800 based on Foata normal form. 1/2570 useless extension candidates. Maximal degree in co-relation 4765. Up to 1802 conditions per place. [2025-01-10 06:47:12,099 INFO L140 encePairwiseOnDemand]: 161/166 looper letters, 65 selfloop transitions, 6 changer transitions 0/136 dead transitions. [2025-01-10 06:47:12,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 136 transitions, 439 flow [2025-01-10 06:47:12,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:47:12,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:47:12,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 462 transitions. [2025-01-10 06:47:12,102 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.463855421686747 [2025-01-10 06:47:12,102 INFO L175 Difference]: Start difference. First operand has 137 places, 137 transitions, 301 flow. Second operand 6 states and 462 transitions. [2025-01-10 06:47:12,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 136 transitions, 439 flow [2025-01-10 06:47:12,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 136 transitions, 437 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:47:12,104 INFO L231 Difference]: Finished difference. Result has 140 places, 136 transitions, 307 flow [2025-01-10 06:47:12,104 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=307, PETRI_PLACES=140, PETRI_TRANSITIONS=136} [2025-01-10 06:47:12,105 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 8 predicate places. [2025-01-10 06:47:12,105 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 136 transitions, 307 flow [2025-01-10 06:47:12,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.83333333333333) internal successors, (395), 6 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:47:12,105 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:47:12,105 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-01-10 06:47:12,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-10 06:47:12,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:47:12,306 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-01-10 06:47:12,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:47:12,307 INFO L85 PathProgramCache]: Analyzing trace with hash 657088708, now seen corresponding path program 1 times [2025-01-10 06:47:12,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:47:12,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257126254] [2025-01-10 06:47:12,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:47:12,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:47:12,319 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 06:47:12,328 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 06:47:12,328 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:47:12,328 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:47:12,357 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:47:12,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:47:12,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257126254] [2025-01-10 06:47:12,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257126254] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:47:12,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:47:12,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:47:12,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149513439] [2025-01-10 06:47:12,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:47:12,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:47:12,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:47:12,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:47:12,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:47:12,362 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 166 [2025-01-10 06:47:12,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 136 transitions, 307 flow. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:47:12,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:47:12,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 166 [2025-01-10 06:47:12,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:47:12,591 INFO L124 PetriNetUnfolderBase]: 949/2957 cut-off events. [2025-01-10 06:47:12,591 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-01-10 06:47:12,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4785 conditions, 2957 events. 949/2957 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 24104 event pairs, 800 based on Foata normal form. 1/2570 useless extension candidates. Maximal degree in co-relation 4761. Up to 1805 conditions per place. [2025-01-10 06:47:12,604 INFO L140 encePairwiseOnDemand]: 163/166 looper letters, 66 selfloop transitions, 4 changer transitions 0/135 dead transitions. [2025-01-10 06:47:12,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 135 transitions, 443 flow [2025-01-10 06:47:12,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:47:12,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:47:12,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2025-01-10 06:47:12,606 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5301204819277109 [2025-01-10 06:47:12,606 INFO L175 Difference]: Start difference. First operand has 140 places, 136 transitions, 307 flow. Second operand 3 states and 264 transitions. [2025-01-10 06:47:12,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 135 transitions, 443 flow [2025-01-10 06:47:12,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 135 transitions, 421 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-01-10 06:47:12,608 INFO L231 Difference]: Finished difference. Result has 135 places, 135 transitions, 289 flow [2025-01-10 06:47:12,609 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=289, PETRI_PLACES=135, PETRI_TRANSITIONS=135} [2025-01-10 06:47:12,609 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 3 predicate places. [2025-01-10 06:47:12,609 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 135 transitions, 289 flow [2025-01-10 06:47:12,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:47:12,610 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:47:12,610 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:47:12,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-10 06:47:12,610 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-01-10 06:47:12,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:47:12,610 INFO L85 PathProgramCache]: Analyzing trace with hash 103612854, now seen corresponding path program 1 times [2025-01-10 06:47:12,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:47:12,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172385630] [2025-01-10 06:47:12,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:47:12,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:47:12,623 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-10 06:47:12,626 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-10 06:47:12,627 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:47:12,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:47:12,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:47:12,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:47:12,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172385630] [2025-01-10 06:47:12,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172385630] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:47:12,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578938864] [2025-01-10 06:47:12,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:47:12,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:47:12,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:47:12,674 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:47:12,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-10 06:47:12,722 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-10 06:47:12,743 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-10 06:47:12,744 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:47:12,744 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:47:12,745 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 06:47:12,746 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:47:12,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:47:12,778 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:47:12,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:47:12,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578938864] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:47:12,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:47:12,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-01-10 06:47:12,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359714006] [2025-01-10 06:47:12,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:47:12,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-10 06:47:12,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:47:12,806 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-10 06:47:12,807 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-01-10 06:47:12,822 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 166 [2025-01-10 06:47:12,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 135 transitions, 289 flow. Second operand has 10 states, 10 states have (on average 66.3) internal successors, (663), 10 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:47:12,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:47:12,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 166 [2025-01-10 06:47:12,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:47:13,159 INFO L124 PetriNetUnfolderBase]: 949/2961 cut-off events. [2025-01-10 06:47:13,159 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2025-01-10 06:47:13,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4788 conditions, 2961 events. 949/2961 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 24086 event pairs, 800 based on Foata normal form. 2/2576 useless extension candidates. Maximal degree in co-relation 4754. Up to 1803 conditions per place. [2025-01-10 06:47:13,172 INFO L140 encePairwiseOnDemand]: 162/166 looper letters, 66 selfloop transitions, 7 changer transitions 0/138 dead transitions. [2025-01-10 06:47:13,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 138 transitions, 450 flow [2025-01-10 06:47:13,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 06:47:13,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-10 06:47:13,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 530 transitions. [2025-01-10 06:47:13,174 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45611015490533563 [2025-01-10 06:47:13,174 INFO L175 Difference]: Start difference. First operand has 135 places, 135 transitions, 289 flow. Second operand 7 states and 530 transitions. [2025-01-10 06:47:13,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 138 transitions, 450 flow [2025-01-10 06:47:13,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 138 transitions, 436 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 06:47:13,176 INFO L231 Difference]: Finished difference. Result has 141 places, 138 transitions, 315 flow [2025-01-10 06:47:13,177 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=315, PETRI_PLACES=141, PETRI_TRANSITIONS=138} [2025-01-10 06:47:13,177 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 9 predicate places. [2025-01-10 06:47:13,177 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 138 transitions, 315 flow [2025-01-10 06:47:13,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 66.3) internal successors, (663), 10 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:47:13,178 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:47:13,178 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2025-01-10 06:47:13,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-10 06:47:13,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:47:13,379 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-01-10 06:47:13,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:47:13,379 INFO L85 PathProgramCache]: Analyzing trace with hash -935837994, now seen corresponding path program 2 times [2025-01-10 06:47:13,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:47:13,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246210145] [2025-01-10 06:47:13,380 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:47:13,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:47:13,387 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-01-10 06:47:13,390 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 6 of 15 statements. [2025-01-10 06:47:13,390 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 06:47:13,390 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:47:13,430 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-10 06:47:13,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:47:13,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246210145] [2025-01-10 06:47:13,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246210145] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:47:13,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:47:13,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:47:13,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218467874] [2025-01-10 06:47:13,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:47:13,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:47:13,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:47:13,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:47:13,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:47:13,435 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 166 [2025-01-10 06:47:13,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 138 transitions, 315 flow. Second operand has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:47:13,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:47:13,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 166 [2025-01-10 06:47:13,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:47:13,698 INFO L124 PetriNetUnfolderBase]: 928/2602 cut-off events. [2025-01-10 06:47:13,698 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-01-10 06:47:13,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4403 conditions, 2602 events. 928/2602 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 20127 event pairs, 0 based on Foata normal form. 21/2341 useless extension candidates. Maximal degree in co-relation 4364. Up to 1711 conditions per place. [2025-01-10 06:47:13,707 INFO L140 encePairwiseOnDemand]: 160/166 looper letters, 114 selfloop transitions, 3 changer transitions 0/179 dead transitions. [2025-01-10 06:47:13,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 179 transitions, 631 flow [2025-01-10 06:47:13,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:47:13,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:47:13,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 371 transitions. [2025-01-10 06:47:13,708 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5587349397590361 [2025-01-10 06:47:13,708 INFO L175 Difference]: Start difference. First operand has 141 places, 138 transitions, 315 flow. Second operand 4 states and 371 transitions. [2025-01-10 06:47:13,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 179 transitions, 631 flow [2025-01-10 06:47:13,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 179 transitions, 627 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 06:47:13,711 INFO L231 Difference]: Finished difference. Result has 141 places, 136 transitions, 317 flow [2025-01-10 06:47:13,711 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=317, PETRI_PLACES=141, PETRI_TRANSITIONS=136} [2025-01-10 06:47:13,712 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 9 predicate places. [2025-01-10 06:47:13,712 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 136 transitions, 317 flow [2025-01-10 06:47:13,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:47:13,712 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:47:13,712 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:47:13,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-10 06:47:13,713 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-01-10 06:47:13,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:47:13,713 INFO L85 PathProgramCache]: Analyzing trace with hash -916030955, now seen corresponding path program 1 times [2025-01-10 06:47:13,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:47:13,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375428417] [2025-01-10 06:47:13,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:47:13,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:47:13,719 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-10 06:47:13,725 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 06:47:13,725 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:47:13,725 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:47:13,827 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:47:13,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:47:13,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375428417] [2025-01-10 06:47:13,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375428417] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:47:13,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220921835] [2025-01-10 06:47:13,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:47:13,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:47:13,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:47:13,829 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:47:13,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-10 06:47:13,880 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-10 06:47:13,902 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 06:47:13,902 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:47:13,902 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:47:13,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 06:47:13,904 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:47:13,926 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:47:13,927 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:47:13,988 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:47:13,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220921835] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:47:13,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:47:13,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-01-10 06:47:13,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139617615] [2025-01-10 06:47:13,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:47:13,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-10 06:47:13,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:47:13,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-10 06:47:13,990 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2025-01-10 06:47:14,003 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 166 [2025-01-10 06:47:14,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 136 transitions, 317 flow. Second operand has 18 states, 18 states have (on average 66.22222222222223) internal successors, (1192), 18 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:47:14,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:47:14,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 166 [2025-01-10 06:47:14,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:47:14,467 INFO L124 PetriNetUnfolderBase]: 946/2875 cut-off events. [2025-01-10 06:47:14,467 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2025-01-10 06:47:14,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4741 conditions, 2875 events. 946/2875 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 22971 event pairs, 800 based on Foata normal form. 4/2530 useless extension candidates. Maximal degree in co-relation 4666. Up to 1766 conditions per place. [2025-01-10 06:47:14,479 INFO L140 encePairwiseOnDemand]: 162/166 looper letters, 66 selfloop transitions, 15 changer transitions 0/144 dead transitions. [2025-01-10 06:47:14,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 144 transitions, 527 flow [2025-01-10 06:47:14,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-10 06:47:14,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-01-10 06:47:14,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1060 transitions. [2025-01-10 06:47:14,484 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42570281124497994 [2025-01-10 06:47:14,484 INFO L175 Difference]: Start difference. First operand has 141 places, 136 transitions, 317 flow. Second operand 15 states and 1060 transitions. [2025-01-10 06:47:14,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 144 transitions, 527 flow [2025-01-10 06:47:14,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 144 transitions, 521 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 06:47:14,490 INFO L231 Difference]: Finished difference. Result has 156 places, 144 transitions, 408 flow [2025-01-10 06:47:14,490 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=408, PETRI_PLACES=156, PETRI_TRANSITIONS=144} [2025-01-10 06:47:14,491 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 24 predicate places. [2025-01-10 06:47:14,491 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 144 transitions, 408 flow [2025-01-10 06:47:14,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 66.22222222222223) internal successors, (1192), 18 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:47:14,492 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:47:14,492 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:47:14,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-10 06:47:14,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:47:14,696 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-01-10 06:47:14,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:47:14,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1483939883, now seen corresponding path program 2 times [2025-01-10 06:47:14,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:47:14,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502750845] [2025-01-10 06:47:14,699 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:47:14,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:47:14,711 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-01-10 06:47:14,734 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-01-10 06:47:14,736 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:47:14,736 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:47:14,969 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:47:14,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:47:14,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502750845] [2025-01-10 06:47:14,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502750845] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:47:14,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768190244] [2025-01-10 06:47:14,970 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:47:14,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:47:14,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:47:14,973 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:47:14,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-10 06:47:15,024 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-01-10 06:47:15,051 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-01-10 06:47:15,051 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:47:15,051 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:47:15,052 INFO L256 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-10 06:47:15,054 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:47:15,092 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:47:15,092 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:47:15,226 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:47:15,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768190244] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:47:15,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:47:15,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2025-01-10 06:47:15,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900176526] [2025-01-10 06:47:15,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:47:15,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-10 06:47:15,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:47:15,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-10 06:47:15,228 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2025-01-10 06:47:15,242 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 166 [2025-01-10 06:47:15,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 144 transitions, 408 flow. Second operand has 23 states, 23 states have (on average 66.21739130434783) internal successors, (1523), 23 states have internal predecessors, (1523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:47:15,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:47:15,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 166 [2025-01-10 06:47:15,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:47:15,650 INFO L124 PetriNetUnfolderBase]: 946/2859 cut-off events. [2025-01-10 06:47:15,650 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2025-01-10 06:47:15,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4759 conditions, 2859 events. 946/2859 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 22695 event pairs, 800 based on Foata normal form. 3/2518 useless extension candidates. Maximal degree in co-relation 4624. Up to 1768 conditions per place. [2025-01-10 06:47:15,663 INFO L140 encePairwiseOnDemand]: 162/166 looper letters, 66 selfloop transitions, 21 changer transitions 0/150 dead transitions. [2025-01-10 06:47:15,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 150 transitions, 636 flow [2025-01-10 06:47:15,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-01-10 06:47:15,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-01-10 06:47:15,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1455 transitions. [2025-01-10 06:47:15,667 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4173838209982788 [2025-01-10 06:47:15,667 INFO L175 Difference]: Start difference. First operand has 156 places, 144 transitions, 408 flow. Second operand 21 states and 1455 transitions. [2025-01-10 06:47:15,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 150 transitions, 636 flow [2025-01-10 06:47:15,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 150 transitions, 626 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-01-10 06:47:15,672 INFO L231 Difference]: Finished difference. Result has 175 places, 150 transitions, 509 flow [2025-01-10 06:47:15,673 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=509, PETRI_PLACES=175, PETRI_TRANSITIONS=150} [2025-01-10 06:47:15,674 INFO L279 CegarLoopForPetriNet]: 132 programPoint places, 43 predicate places. [2025-01-10 06:47:15,675 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 150 transitions, 509 flow [2025-01-10 06:47:15,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 66.21739130434783) internal successors, (1523), 23 states have internal predecessors, (1523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:47:15,675 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:47:15,675 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:47:15,686 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-10 06:47:15,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2025-01-10 06:47:15,876 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2025-01-10 06:47:15,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:47:15,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1792956462, now seen corresponding path program 3 times [2025-01-10 06:47:15,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:47:15,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447694163] [2025-01-10 06:47:15,877 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 06:47:15,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:47:15,889 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 39 statements into 11 equivalence classes. [2025-01-10 06:47:15,940 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 39 of 39 statements. [2025-01-10 06:47:15,940 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-01-10 06:47:15,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 06:47:15,940 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 06:47:15,943 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-01-10 06:47:15,953 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-01-10 06:47:15,954 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:47:15,954 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 06:47:15,974 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 06:47:15,974 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-10 06:47:15,975 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2025-01-10 06:47:15,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2025-01-10 06:47:15,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2025-01-10 06:47:15,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2025-01-10 06:47:15,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2025-01-10 06:47:15,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2025-01-10 06:47:15,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2025-01-10 06:47:15,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2025-01-10 06:47:15,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2025-01-10 06:47:15,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2025-01-10 06:47:15,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2025-01-10 06:47:15,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2025-01-10 06:47:15,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2025-01-10 06:47:15,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2025-01-10 06:47:15,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2025-01-10 06:47:15,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2025-01-10 06:47:15,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2025-01-10 06:47:15,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2025-01-10 06:47:15,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2025-01-10 06:47:15,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2025-01-10 06:47:15,977 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2025-01-10 06:47:15,977 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2025-01-10 06:47:15,977 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2025-01-10 06:47:15,977 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2025-01-10 06:47:15,977 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2025-01-10 06:47:15,977 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2025-01-10 06:47:15,977 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2025-01-10 06:47:15,977 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2025-01-10 06:47:15,977 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2025-01-10 06:47:15,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-01-10 06:47:15,979 INFO L422 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1] [2025-01-10 06:47:15,980 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-01-10 06:47:15,980 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-01-10 06:47:15,999 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-01-10 06:47:16,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 218 transitions, 452 flow [2025-01-10 06:47:16,020 INFO L124 PetriNetUnfolderBase]: 97/429 cut-off events. [2025-01-10 06:47:16,020 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-01-10 06:47:16,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 429 events. 97/429 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2395 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 264. Up to 12 conditions per place. [2025-01-10 06:47:16,022 INFO L82 GeneralOperation]: Start removeDead. Operand has 173 places, 218 transitions, 452 flow [2025-01-10 06:47:16,024 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 173 places, 218 transitions, 452 flow [2025-01-10 06:47:16,025 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 06:47:16,025 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1e7e659d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 06:47:16,025 INFO L334 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2025-01-10 06:47:16,026 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 06:47:16,026 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-01-10 06:47:16,026 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 06:47:16,026 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:47:16,026 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-01-10 06:47:16,026 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-01-10 06:47:16,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:47:16,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1142629, now seen corresponding path program 1 times [2025-01-10 06:47:16,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:47:16,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642107322] [2025-01-10 06:47:16,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:47:16,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:47:16,031 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 06:47:16,032 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 06:47:16,033 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:47:16,033 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:47:16,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:47:16,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:47:16,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642107322] [2025-01-10 06:47:16,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642107322] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:47:16,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:47:16,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:47:16,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861071707] [2025-01-10 06:47:16,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:47:16,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:47:16,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:47:16,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:47:16,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:47:16,064 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 218 [2025-01-10 06:47:16,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 218 transitions, 452 flow. Second operand has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:47:16,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:47:16,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 218 [2025-01-10 06:47:16,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:47:20,707 INFO L124 PetriNetUnfolderBase]: 39869/86580 cut-off events. [2025-01-10 06:47:20,707 INFO L125 PetriNetUnfolderBase]: For 139/139 co-relation queries the response was YES. [2025-01-10 06:47:20,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144770 conditions, 86580 events. 39869/86580 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 2447. Compared 1000470 event pairs, 34920 based on Foata normal form. 17156/92482 useless extension candidates. Maximal degree in co-relation 107885. Up to 58076 conditions per place. [2025-01-10 06:47:21,112 INFO L140 encePairwiseOnDemand]: 172/218 looper letters, 93 selfloop transitions, 3 changer transitions 0/180 dead transitions. [2025-01-10 06:47:21,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 180 transitions, 568 flow [2025-01-10 06:47:21,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:47:21,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:47:21,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 475 transitions. [2025-01-10 06:47:21,114 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5447247706422018 [2025-01-10 06:47:21,114 INFO L175 Difference]: Start difference. First operand has 173 places, 218 transitions, 452 flow. Second operand 4 states and 475 transitions. [2025-01-10 06:47:21,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 180 transitions, 568 flow [2025-01-10 06:47:21,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 180 transitions, 568 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 06:47:21,117 INFO L231 Difference]: Finished difference. Result has 178 places, 180 transitions, 396 flow [2025-01-10 06:47:21,118 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=396, PETRI_PLACES=178, PETRI_TRANSITIONS=180} [2025-01-10 06:47:21,118 INFO L279 CegarLoopForPetriNet]: 173 programPoint places, 5 predicate places. [2025-01-10 06:47:21,118 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 180 transitions, 396 flow [2025-01-10 06:47:21,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:47:21,118 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:47:21,118 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-01-10 06:47:21,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-01-10 06:47:21,119 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-01-10 06:47:21,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:47:21,119 INFO L85 PathProgramCache]: Analyzing trace with hash -318429490, now seen corresponding path program 1 times [2025-01-10 06:47:21,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:47:21,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615768537] [2025-01-10 06:47:21,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:47:21,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:47:21,124 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 06:47:21,127 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 06:47:21,127 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:47:21,127 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:47:21,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:47:21,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:47:21,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615768537] [2025-01-10 06:47:21,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615768537] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:47:21,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295475818] [2025-01-10 06:47:21,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:47:21,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:47:21,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:47:21,173 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:47:21,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-10 06:47:21,226 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 06:47:21,244 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 06:47:21,244 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:47:21,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:47:21,246 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:47:21,247 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:47:21,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:47:21,287 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:47:21,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295475818] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:47:21,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:47:21,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-01-10 06:47:21,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223456660] [2025-01-10 06:47:21,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:47:21,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:47:21,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:47:21,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:47:21,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-01-10 06:47:21,295 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 218 [2025-01-10 06:47:21,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 180 transitions, 396 flow. Second operand has 6 states, 6 states have (on average 84.83333333333333) internal successors, (509), 6 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:47:21,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:47:21,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 218 [2025-01-10 06:47:21,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:47:25,970 INFO L124 PetriNetUnfolderBase]: 39869/86579 cut-off events. [2025-01-10 06:47:25,970 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2025-01-10 06:47:26,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144780 conditions, 86579 events. 39869/86579 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 2446. Compared 1000351 event pairs, 34920 based on Foata normal form. 1/75326 useless extension candidates. Maximal degree in co-relation 144761. Up to 58071 conditions per place. [2025-01-10 06:47:26,464 INFO L140 encePairwiseOnDemand]: 213/218 looper letters, 89 selfloop transitions, 6 changer transitions 0/179 dead transitions. [2025-01-10 06:47:26,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 179 transitions, 582 flow [2025-01-10 06:47:26,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:47:26,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:47:26,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 600 transitions. [2025-01-10 06:47:26,467 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45871559633027525 [2025-01-10 06:47:26,467 INFO L175 Difference]: Start difference. First operand has 178 places, 180 transitions, 396 flow. Second operand 6 states and 600 transitions. [2025-01-10 06:47:26,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 179 transitions, 582 flow [2025-01-10 06:47:26,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 179 transitions, 580 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:47:26,470 INFO L231 Difference]: Finished difference. Result has 181 places, 179 transitions, 402 flow [2025-01-10 06:47:26,470 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=402, PETRI_PLACES=181, PETRI_TRANSITIONS=179} [2025-01-10 06:47:26,472 INFO L279 CegarLoopForPetriNet]: 173 programPoint places, 8 predicate places. [2025-01-10 06:47:26,472 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 179 transitions, 402 flow [2025-01-10 06:47:26,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.83333333333333) internal successors, (509), 6 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:47:26,472 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:47:26,472 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-01-10 06:47:26,480 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-10 06:47:26,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-01-10 06:47:26,673 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-01-10 06:47:26,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:47:26,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1281378338, now seen corresponding path program 1 times [2025-01-10 06:47:26,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:47:26,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379213957] [2025-01-10 06:47:26,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:47:26,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:47:26,681 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 06:47:26,689 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 06:47:26,690 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:47:26,690 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:47:26,710 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:47:26,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:47:26,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379213957] [2025-01-10 06:47:26,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379213957] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:47:26,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:47:26,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:47:26,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546492007] [2025-01-10 06:47:26,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:47:26,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:47:26,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:47:26,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:47:26,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:47:26,715 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 218 [2025-01-10 06:47:26,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 179 transitions, 402 flow. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:47:26,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:47:26,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 218 [2025-01-10 06:47:26,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:47:31,203 INFO L124 PetriNetUnfolderBase]: 39869/86578 cut-off events. [2025-01-10 06:47:31,203 INFO L125 PetriNetUnfolderBase]: For 146/146 co-relation queries the response was YES. [2025-01-10 06:47:31,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144782 conditions, 86578 events. 39869/86578 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 2441. Compared 1000239 event pairs, 34920 based on Foata normal form. 1/75326 useless extension candidates. Maximal degree in co-relation 144757. Up to 58074 conditions per place. [2025-01-10 06:47:31,872 INFO L140 encePairwiseOnDemand]: 215/218 looper letters, 90 selfloop transitions, 4 changer transitions 0/178 dead transitions. [2025-01-10 06:47:31,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 178 transitions, 586 flow [2025-01-10 06:47:31,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:47:31,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:47:31,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 345 transitions. [2025-01-10 06:47:31,874 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5275229357798165 [2025-01-10 06:47:31,874 INFO L175 Difference]: Start difference. First operand has 181 places, 179 transitions, 402 flow. Second operand 3 states and 345 transitions. [2025-01-10 06:47:31,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 178 transitions, 586 flow [2025-01-10 06:47:31,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 178 transitions, 564 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-01-10 06:47:31,877 INFO L231 Difference]: Finished difference. Result has 176 places, 178 transitions, 384 flow [2025-01-10 06:47:31,878 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=384, PETRI_PLACES=176, PETRI_TRANSITIONS=178} [2025-01-10 06:47:31,878 INFO L279 CegarLoopForPetriNet]: 173 programPoint places, 3 predicate places. [2025-01-10 06:47:31,878 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 178 transitions, 384 flow [2025-01-10 06:47:31,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:47:31,878 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:47:31,878 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:47:31,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-01-10 06:47:31,879 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-01-10 06:47:31,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:47:31,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1252643138, now seen corresponding path program 1 times [2025-01-10 06:47:31,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:47:31,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918966067] [2025-01-10 06:47:31,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:47:31,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:47:31,892 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-10 06:47:31,894 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-10 06:47:31,894 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:47:31,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:47:31,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:47:31,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:47:31,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918966067] [2025-01-10 06:47:31,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918966067] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:47:31,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138778435] [2025-01-10 06:47:31,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:47:31,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:47:31,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:47:31,949 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:47:31,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-10 06:47:32,002 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-10 06:47:32,022 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-10 06:47:32,022 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:47:32,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:47:32,023 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 06:47:32,024 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:47:32,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:47:32,040 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:47:32,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:47:32,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138778435] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:47:32,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:47:32,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-01-10 06:47:32,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40206074] [2025-01-10 06:47:32,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:47:32,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-10 06:47:32,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:47:32,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-10 06:47:32,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-01-10 06:47:32,072 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 218 [2025-01-10 06:47:32,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 178 transitions, 384 flow. Second operand has 10 states, 10 states have (on average 85.3) internal successors, (853), 10 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:47:32,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:47:32,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 218 [2025-01-10 06:47:32,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:47:36,607 INFO L124 PetriNetUnfolderBase]: 39869/86582 cut-off events. [2025-01-10 06:47:36,607 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2025-01-10 06:47:36,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144785 conditions, 86582 events. 39869/86582 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 2441. Compared 1000499 event pairs, 34920 based on Foata normal form. 2/75332 useless extension candidates. Maximal degree in co-relation 144750. Up to 58072 conditions per place. [2025-01-10 06:47:36,996 INFO L140 encePairwiseOnDemand]: 214/218 looper letters, 90 selfloop transitions, 7 changer transitions 0/181 dead transitions. [2025-01-10 06:47:36,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 181 transitions, 593 flow [2025-01-10 06:47:36,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 06:47:36,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-10 06:47:36,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 687 transitions. [2025-01-10 06:47:36,998 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45019659239842724 [2025-01-10 06:47:36,998 INFO L175 Difference]: Start difference. First operand has 176 places, 178 transitions, 384 flow. Second operand 7 states and 687 transitions. [2025-01-10 06:47:36,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 181 transitions, 593 flow [2025-01-10 06:47:37,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 181 transitions, 579 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 06:47:37,001 INFO L231 Difference]: Finished difference. Result has 182 places, 181 transitions, 410 flow [2025-01-10 06:47:37,002 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=410, PETRI_PLACES=182, PETRI_TRANSITIONS=181} [2025-01-10 06:47:37,002 INFO L279 CegarLoopForPetriNet]: 173 programPoint places, 9 predicate places. [2025-01-10 06:47:37,003 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 181 transitions, 410 flow [2025-01-10 06:47:37,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 85.3) internal successors, (853), 10 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:47:37,003 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:47:37,003 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2025-01-10 06:47:37,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-10 06:47:37,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-01-10 06:47:37,208 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-01-10 06:47:37,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:47:37,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1653613730, now seen corresponding path program 2 times [2025-01-10 06:47:37,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:47:37,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739709802] [2025-01-10 06:47:37,209 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:47:37,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:47:37,217 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-01-10 06:47:37,220 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 6 of 15 statements. [2025-01-10 06:47:37,220 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 06:47:37,221 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:47:37,253 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-10 06:47:37,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:47:37,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739709802] [2025-01-10 06:47:37,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739709802] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:47:37,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:47:37,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:47:37,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80658528] [2025-01-10 06:47:37,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:47:37,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:47:37,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:47:37,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:47:37,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:47:37,263 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 218 [2025-01-10 06:47:37,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 181 transitions, 410 flow. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:47:37,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:47:37,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 218 [2025-01-10 06:47:37,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:47:42,279 INFO L124 PetriNetUnfolderBase]: 42659/92593 cut-off events. [2025-01-10 06:47:42,280 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2025-01-10 06:47:42,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154902 conditions, 92593 events. 42659/92593 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 2529. Compared 1078632 event pairs, 23924 based on Foata normal form. 21/80721 useless extension candidates. Maximal degree in co-relation 154862. Up to 62112 conditions per place. [2025-01-10 06:47:42,753 INFO L140 encePairwiseOnDemand]: 212/218 looper letters, 142 selfloop transitions, 3 changer transitions 0/226 dead transitions. [2025-01-10 06:47:42,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 226 transitions, 790 flow [2025-01-10 06:47:42,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:47:42,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:47:42,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 475 transitions. [2025-01-10 06:47:42,755 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5447247706422018 [2025-01-10 06:47:42,755 INFO L175 Difference]: Start difference. First operand has 182 places, 181 transitions, 410 flow. Second operand 4 states and 475 transitions. [2025-01-10 06:47:42,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 226 transitions, 790 flow [2025-01-10 06:47:42,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 226 transitions, 786 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 06:47:42,759 INFO L231 Difference]: Finished difference. Result has 185 places, 183 transitions, 430 flow [2025-01-10 06:47:42,759 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=430, PETRI_PLACES=185, PETRI_TRANSITIONS=183} [2025-01-10 06:47:42,760 INFO L279 CegarLoopForPetriNet]: 173 programPoint places, 12 predicate places. [2025-01-10 06:47:42,760 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 183 transitions, 430 flow [2025-01-10 06:47:42,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:47:42,760 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:47:42,760 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:47:42,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-01-10 06:47:42,761 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-01-10 06:47:42,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:47:42,761 INFO L85 PathProgramCache]: Analyzing trace with hash 2080622805, now seen corresponding path program 1 times [2025-01-10 06:47:42,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:47:42,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772854552] [2025-01-10 06:47:42,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:47:42,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:47:42,771 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-10 06:47:42,778 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-10 06:47:42,779 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:47:42,779 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:47:42,850 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:47:42,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:47:42,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772854552] [2025-01-10 06:47:42,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772854552] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:47:42,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758997483] [2025-01-10 06:47:42,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:47:42,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:47:42,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:47:42,853 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:47:42,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-10 06:47:42,906 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-10 06:47:42,930 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-10 06:47:42,930 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:47:42,930 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:47:42,931 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 06:47:42,932 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:47:42,954 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:47:42,954 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:47:43,019 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:47:43,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758997483] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:47:43,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:47:43,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-01-10 06:47:43,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872680501] [2025-01-10 06:47:43,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:47:43,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-10 06:47:43,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:47:43,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-10 06:47:43,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2025-01-10 06:47:43,035 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 218 [2025-01-10 06:47:43,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 183 transitions, 430 flow. Second operand has 18 states, 18 states have (on average 85.27777777777777) internal successors, (1535), 18 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:47:43,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:47:43,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 218 [2025-01-10 06:47:43,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand